diff --git a/Makefile.in b/Makefile.in
index fbb396f5c2..dea0153eec 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -25,7 +25,7 @@ DISTFILES =	CHANGES Makefile.in README \
 		acconfig.h aclocal.m4 config.guess config.h.in config.h.win32 \
 		config.status.win32 config.sub configure configure.in \
 		install-sh libtool.m4 ltconfig ltmain.sh \
-		bin lib make \
+		bin lib make contrib \
 		version
 DOCDIRS =	arm draft misc rfc